This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 10.04 LTS:
thunderbird 3.0.7+build1+nobinonly-0ubuntu0.10.04.1

After a standard system update you need to restart Thunderbird to make
all the necessary changes.

Details follow:

Several dangling pointer vulnerabilities were discovered in Thunderbird. An
attacker could exploit this to crash Thunderbird or possibly run arbitrary
code as the user invoking the program. (CVE-2010-2760, CVE-2010-2767,
CVE-2010-3167)

It was discovered that the XPCSafeJSObjectWrapper (SJOW) security wrapper
did not always honor the same-origin policy. If JavaScript was enabled, an
attacker could exploit this to run untrusted JavaScript from other domains.
(CVE-2010-2763)

Matt Haggard discovered that Thunderbird did not honor same-origin policy
when processing the statusText property of an XMLHttpRequest object. If a
user were tricked into viewing a malicious site, a remote attacker could
use this to gather information about servers on internal private networks.
(CVE-2010-2764)

Chris Rohlf discovered an integer overflow when Thunderbird processed the
HTML frameset element. If a user were tricked into viewing a malicious
site, a remote attacker could use this to crash Thunderbird or possibly run
arbitrary code as the user invoking the program. (CVE-2010-2765)

Several issues were discovered in the browser engine. If a user were
tricked into viewing a malicious site, a remote attacker could use this to
crash Thunderbird or possibly run arbitrary code as the user invoking the
program. (CVE-2010-2766, CVE-2010-3168)

David Huang and Collin Jackson discovered that the <object> tag could
override the charset of a framed HTML document in another origin. An
attacker could utilize this to perform cross-site scripting attacks.
(CVE-2010-2768)

Paul Stone discovered that with designMode enabled an HTML selection
containing JavaScript could be copied and pasted into a document and have
the JavaScript execute within the context of the site where the code was
dropped. If JavaScript was enabled, an attacker could utilize this to
perform cross-site scripting attacks. (CVE-2010-2769)

A buffer overflow was discovered in Thunderbird when processing text runs.
If a user were tricked into viewing a malicious site, a remote attacker
could use this to crash Thunderbird or possibly run arbitrary code as the
user invoking the program. (CVE-2010-3166)

Peter Van der Beken, Jason Oster, Jesse Ruderman, Igor Bukanov, Jeff
Walden, Gary Kwong and Olli Pettay discovered several flaws in the
browser engine. If a user were tricked into viewing a malicious site, a
remote attacker could use this to crash Thunderbird or possibly run
arbitrary code as the user invoking the program. (CVE-2010-3169)